Ordering intermetallic alloys by ion irradiation: A way to tailor magnetic media
We show how, combining He ion irradiation and thermal mobility below 600 K, the
transformation from chemical disorder to order in thin films of an intermetallic ferromagnet
(FePd) may be triggered and controlled. Kinetic Monte Carlo simulations show that the initial
directional short range order determines the transformation. Magnetic ordering
perpendicular to the film plane was achieved, promoting the initially weak magnetic
anisotropy to the highest values known for FePd films. Applications to ultrahigh density …
transformation from chemical disorder to order in thin films of an intermetallic ferromagnet
(FePd) may be triggered and controlled. Kinetic Monte Carlo simulations show that the initial
directional short range order determines the transformation. Magnetic ordering
perpendicular to the film plane was achieved, promoting the initially weak magnetic
anisotropy to the highest values known for FePd films. Applications to ultrahigh density …
Ordering intermetallic alloys by ion irradiation: a new way to tailor magnetic media
D Ravelosona, JI Menendez, JP Attane… - 2003 IEEE …, 2003 - ieeexplore.ieee.org
In this paper, we describe ordering mechanism under irradiation by combining experiments
and Kinetic Lattice Monte Carlo (KLMC) simulations on the FePt and FePd equiatomic
systems. Both experiments and simulations confirm that our irradiation conditions (small
energy transfer, low collision cross section, irradiation temperature under 550K) specifically
affect DSRO.
and Kinetic Lattice Monte Carlo (KLMC) simulations on the FePt and FePd equiatomic
systems. Both experiments and simulations confirm that our irradiation conditions (small
energy transfer, low collision cross section, irradiation temperature under 550K) specifically
affect DSRO.
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